Database Design Crossword Puzzle

QUESTIONS LIST:

• cardinality : defines the number of entity instances involved in a relationship.
• surrogatekey : an artificial key used to uniquely identify records.
• redundancy : unnecessary duplication of data in a database.
• join : operation used to combine rows from two or more tables.
• eer : extension of er model with subclassing and specialization.
• candidate : a potential key that can uniquely identify tuples.
• domain : the allowed values for an attribute.
• weakentity : an entity that depends on a strong one and has no key of its own.
• mapping : process of converting er diagrams into relational schema.
• dependency : relationship showing how one attribute value determines another.
• tuple : a single row of a relation.
• superkey : a set of attributes that uniquely identifies a tuple.
• participation : constraint that determines whether all entities are involved in a relationship.
• schema : structure that defines how a database is organized.
• aggregation : treating a relationship set as an entity set.